Review on Sennheiser HD 4.50 BTNC Bluetooth Wireless Headphones Featuring Active Noise Cancellation in Black and Silver by Stanislaw Biedka ᠌

Noise reduction makes noise, when you pause the video / music, there is a 2 second quiet hum and then it stops, also noise reduction cannot be turned off, but I don’t need it at all, on the contrary, I don’t feel comfortable with it, a feeling of vacuum is created in my ears, the sound over the cable amplifies low frequencies, and puts high frequencies in such a deep that, simply listening to a song, the vocalist’s voice completely disappears, and only the b instrumental remains, I have never seen such a freaking effect, the sound is normal via bluetooth, but personally I categorically lack high frequencies , and the middle ones are somehow muffled or something.